WorksheetsChemistry 1 Review - Unit 3 Bonding
Total questions: 10
Worksheet time: 5mins
The correct Lewis dot structure shows how the shape of a water molecule is ____.
linear and polar
linear and nonpolar
bent and polar
bent and nonpolar
Which characteristic is common to MOST metals?
They tend to form covalent compounds with other elements.
They have one, two, or three valence electrons.
They have low melting and boiling points.
They tend to form negative ions.
Which model represents the bonding in NaCl, sodium chloride?
Ne, Ar, and Kr are all in the same column (group) on the periodic table. What do all three of these elements have in common?
atomic mass
negative electrical charge
number of neutrons
full valence electron shells
What is the molecular geometry of carbon tetrachloride (CCl4)?
linear
trigonal planar
tetrahedral
trigonal pyramidal
The diagrams in the box represent the Lewis dot structures for different molecules. Which molecule would be polar based on its Lewis dot structure?
A
B
C
D
The chart shows the electronegativity values as the elements are arranged on the periodic table. Which statement best describes the electronegativity values of the elements shown?
Electronegativity decreases with increasing atomic number within a period.
Electronegativity decreases with increasing atomic number within a group.
Electronegativity tends to be higher in the metals than in the nonmetals.
Electronegativity tends to be lower in the gases than in the solids.
Compounds can be classified as covalent or ionic by noting the location on the periodic table for each atom in the compound. Which compound is covalently bonded?
sodium chloride (NaCl)
sulfur dioxide (SO2)
potassium bromide (KBr)
magnesium chloride (MgCl2)
What is the IUPAC name for the compound N2O3?
nitric oxide
nitrous oxide
dinitrogen trioxide
trioxygen dinitride
According to VSEPR theory, molecules of which of these compounds have a trigonal planar geometry?
acetylene, C2H2
carbon dioxide, CO2
carbon tetrachloride, CCl4
formaldehyde, CH2O
